卡方检验

NMath Stats contains a data table class with functions for computing descriptive statistics, such as mean, variance, standard deviation, percentile, median, quartiles, geometric mean, harmonic mean, RMS, kurtosis, skewness, and many more; PDF, CDF, inverse CDF, and random variable moments for a variety of probability distributions, including normal, Poisson, chi-square, gamma, beta, Student's t, F, binomial, and negative binomial; Combinatorial functions, such as factorial, log factorial, binomial coefficient, and log binomial; Multiple linear regression; Basic hypothesis tests, such as z-test, t-test, and F-test, with calculation of p-values, critical values, and confidence intervals; One-way and two-way analysis of variance and analysis of variance with repeated measures; Multivariate statistical analyses, including principal component analysis and hierarchical cluster analysis.

nmath统计包含一个数据表的阶层与职能计算描述性统计，如平均，方差，标准差，百分位，中位数， 25 ％，几何平均数，调和的意思是，有效值，峭度，偏度，还有更多的； PDF格式，民防部队，逆民防部队，并随机变量矩的各种概率分布，包括正常，泊松，卡方检定，伽玛，测试版，学生的吨，男，二项式，并负二项分布；组合的功能，例如阶乘，日志阶乘，二项式系数，并登入二项式；多元线性回归；基本假设测试，如的Z测试， t检验， F检验，计算p值，临界值，和置信区间；之一，双向和双方法方差分析和方差分析与反复的措施；多元统计分析，包括主成分分析和聚类分析。

Consideration of size leads to a general proposition for quadratic forms in normal variate which gives conditions for a class of test statistics, which are chi-square under

正态变量的二次齐次式给出了一类统计检验的条件，对大小的考虑引出了一个对其一般性的命题，即在分类正确若为卡方分配，在分类有误时将有向上偏误。

Consideration of size leads to a general proposition for quadratic forms in normal variate which gives conditions for a class of test statistics, which are chi-square under correct specification, to be oversized under misspecification.

正态变量的二次齐次式给出了一类统计检验的条件，对大小的考虑引出了一个对其一般性的命题，即在分类正确若为卡方分配，在分类有误时将有向上偏误。

Methods Blood types of 1 083 patients with 12 kinds of neurological diseases were determined by A/S standard serum glassine method, and the results were compared with blood type distribution of normal people. Besides. All the data were treated by χ2 test.

用A、B标准血清玻片法对患有神经系统12种疾病的1 083例患者进行血型测定，并与正常人群A、B、O血型分布构成比进行比较，用卡方(χ2)检验进行统计学处理。

the article examines the characteristics of foreign exchange returns distribution,coupling with kinds of foreign exchange datas, figures out parameters of model by using variance gamma model.the empirically results ofkolmogorov-smirnov test and goodness of fit chi-square test shows that v.g.

本文运用方差gamma模型对外汇收益分布特征进行对比拟合分析，并结合几种被选汇率数据对模型参数进行估计。ks检验和卡方拟合优度检验的实证结果表明v.g。

The study needs enterovirus infections data in Taiwan from 1999 to 2005. The sources of data include the sentinel surveillance system, the Notifiable disease reporting system and the contract lab data. Statistical methods used for the analysis of seasonal variation include graphics, chi-square test for goodness of fit, method of decomposition and circular distribution.

使用之研究材料为1999年至2005年台湾肠病毒的监测资料，包括定点医师於每周报告之手足口病与疹性咽峡炎病例、法定传染病中应报告的肠病毒感染并发重症确定病例与病毒性感染症合约实验室之肠病毒感染检验阳性病例，分别应用绘图、卡方适合度检定、分解法与圆形分布法进行分析。

Due to the violation of the PA condition, the distributions of Wald statistics and Score statistics based on GLS estimators are noncentral $\chi^{2}$ distributions. The efficiency of testing based on the GEE method is largely influenced.

由于PA条件不成立，回归系数的GLS估计不再是渐近无偏的，构造的Wald和Score统计量的分布不再是中心卡方分布，从而对于检验的效率也产生了严重影响。

The results show that the gender differences have been reflected in the autonomous learning of non-English students in the following aspects: learning goal, learning plan, in-class state, note taking, participation of in-class discussion, search for learning materials, seeking for learning aids, self-monitoring and self-assessment.

卡方检验的结果显示男女生在英语自主学习过程中体现的差异有：自我学习目标、学习计划、听课状态、课堂笔记、参与课堂讨论、寻求学习资料、寻求学习帮助、自我监控和自我评价等方面。

Fourthly, it is not found the male and female are significantly different in using the top 10 swearwords after the X2-test.

第四，经过卡方检验，发现男女在使用十个常用詈词时候，在数量上并没有显著差异。

The patient survival rates were assessed with Kaplan-Meier curves and the chi-square test was used when appropriate.

通过Kaplan-Meier生存曲线来评价患者的存活率，适当的时候还会用到卡方检验。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。